It has been nearly three weeks since a 7.0 earthquake devastated Haiti, with concerns mounting about people getting enough food and clean water.

Officials say there's a growing sanitation crisis due to the lack of enough shelter and bathroom facilities. Many crowded areas have puddles of filthy water, which have become a breeding ground for mosquitos, which are spreading deadly diseases and epidemics.

Some hospitals are reporting that half the children they treat already have malaria.

CBN's Operation Blessing has been on the ground in Haiti since day one, helping to meet the most important need on the ground: clean drinking water.

The relief organization installed water purification plants at two clinics that see more than a thousand patients a day.

Operation Blessing also put up four other water units around the capital that serve the general hospital, national stadium, and two refugee camps.

They've helped thousands of people who would otherwise be drinking dirty, disease-ridden water.

There are 16 more water purification units on the ground ready to be installed by Operation Blessing staff. But aid workers say there are hundreds of thousands of people still in desperate need of help.